I do that too! But with this I can put the exact same load on different engines so comparison testing can be consistant. In a car/truck it wold be very difficult to reproduce the exact same amount of load from one engine to the next. so this would provide consistancy. Also I am will be able to compare the performance of one engine running different fuel, different pipes ect. or I could compare multiple engine running the same fuel or the same pipe to see how each of them perform. But this would provide consistancy for my tests.

If I could figure out a way to calculate actual real world power that would be awesome. All of the engine companies just put whatever performance number they want to on an engine. You never can really KNOW how much horse power or RPMs an engine is capable of by reading their marketing material. There is no standard by which they adhere to which makes comparing manufactures specs usless.